According to what I've read over the last few days (while waiting for my PSP to arrive) yes it will. There is no difference between what the Phat and Slim look for to recognize a service mode (Pandora) battery. The only PSPs it won't work on are 200Xs with TA-088v3 and 300Xs. You're good to go, assuming the GoW in the topic title means God of War.

According to what I've read over the last few days (while waiting for my PSP to arrive) yes it will. There is no difference between what the Phat and Slim look for to recognize a service mode (Pandora) battery. The only PSPs it won't work on are 200Xs with TA-088v3 and 300Xs. You're good to go.

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Reason i ask cause i know theres a Pandora Battery Specific for PSP 2000 anyways.I see if i Downgraade my PSP with the Battery since im on OFW 6.20 ^^;;

psp1000 batteries work for psp 1000 and psp 2000, dont try cramming a psp2000 battery into a psp1000, i popped something inside my 2000 battery when i tried that once, wouldnt work for a good 12 hrs, (im guessing theres an overload breaker or something)